Is This Love?

I'm just 15 yrs old n i don't know what I'm doing. This guy is a really good friend of mine. Recently, he told me that he likes me. I like him, but don't know if it is love or something else because we are just 15. One more thing, he says he misses me a lot when he is alone and actually he has an attitude and fights a lot with guys, but whenever he is with me he is not at all like that. He cares for me a lot.

Just tell me what all is this. It's like I can't wait to get in a serious relationship with him, but I am not ready right now. It's too early for me. I don't know about him.